[cknuth]

Richard, I truly appreciate your thoughts and agree with your logic. When I originally set up the Magnum inverter, I was surprised and uneasy about how much time the settings put the batteries at higher voltage but did not question it. Looking at BB's blog yesterday, I see that they are still recommending the CC/CV mode for lithiums, but of course I will talk with them on Monday about it. It's certainly a simple matter to instead use one of the lead/acid modes with tweaked voltages to produce the desired lithium charging profile. Maybe CC/CV is intended for users who are off shore power on a very regular basis, whereas my pattern is to be plugged in for months.

Although I'll be contacting AmpLStart on Monday as well, I don't consider that to be the main issue; as you suggest, it will probably resolve itself.

The battery monitor I have is a separate Xantrex that Chester installed.

Thanks again,
C